Trace Elements Analysis in Drinking Water of Meghalaya by Using Graphite Furnace-Atomic Absorption Spectroscopy and in relation to Environmental and Health Issues

Table 5

Correlation coefficient between trace elements in untreated and treated water.

Untreated water		Treated water
Mn/Cr	0.667	Cr/Li	0.647
Zn/Ni	0.702	Mo/Mn	0.539
Se/Cu	0.506	Cd/Cu	0.759
Mo/Fe	0.561	Pb/Cr	0.707
Cd/Mn	0.697	Ca/Cu	0.765
Cd/Cu	0.577	Mg/Li	0.667
Ca/Na	0.585	Mg/Cr	0. 518
Ca/Co	0.530	Cd/Se	0.576
Mg/Mn	0.595	Pb/Zn	0.500
Mg/Ni	0.526	Cd/Ca	0.790
Pb/Zn	0.523	K/Mo	0.557
Ca/Zn	0.549	K/Ca	0.550
K/Mg	0.635	K/Mg	0.558
Co/Mn	−0.700
Ni/Li	−0.633	Cu/Fe	−0.784
Ni/Na	−0.604	Cd/Fe	−0.703
Cu/Cr	−0.776	Cd/Na	−0.701
Cu/Co	−0.745	Na/Ca	−0.784
Zn/Mn	−0.740	Na/K	−0.823
Cd/Co	−0.691	Ca/Zn	−0.612
Mg/Fe	−0.837	Mg/Se	−0.994
Mg/Co	−0.640	Mg/Cd	−0.637
Pb/Mo	−0.765
K/Se	−0.639